Release Notes 2018.04.02

* Feature: MUCH easier to start operating a boat while swimming nearby.
* Feature: Hold instead of tap R to return to building. Prevents accidental taps.
* Feature: Drowning simply warps you back to build.
* Feature: Minor input key ui update.
* Feature: Flashy pink warp effect.
* Fix: Menu visibility error that could happen after drowning.
* Fix: Less sinking after traveling large distances.
* Fix: Error when active propeller leaves view.